Gauss's law (electric)
∇·E = ρ/ε₀
Electric charge is the source of electric field.
Try the simulationElectromagnetic Field Theory
Start exploring
13 simulations ready
- 6topics
- 13interactive pages
- 4Maxwell equations
Research Team
Peyla Navya Dhara Manikanta
pnavyadm2008@gmail.com
Prajna Sree Gudivada
sreeprajna0101@gmail.com
Bramhani Sirimandla
bramhani1710@gmail.comWhat is electromagnetic field theory?
Electromagnetic field theory is the study of electric and magnetic fields and their interactions. It forms the foundation of modern communication systems, antennas, wireless technology, and electromagnetic wave propagation, connecting fundamental physics with real-world engineering applications. The course covers vector analysis, electrostatics, magnetostatics, Maxwell’s equations, electromagnetic induction, wave propagation, and boundary conditions.
Students develop an understanding of electromagnetic field behavior in different media and learn to apply mathematical techniques to analyze practical engineering problems. The course provides a strong foundation for advanced studies in antenna theory, microwave engineering, wireless communication, electromagnetic compatibility, and RF system design.
- Coordinate systems
- Electrostatics
- Magnetostatics
- Induction
- Wave propagation
- Waveguides
Maxwell's four equations
Gauss's law (magnetic)
∇·B = 0
There are no magnetic monopoles, so magnetic field lines always close on themselves.
Faraday's law
∇×E = −∂B/∂t
A changing magnetic field induces an electric field.
Try the simulationAmpere–Maxwell law
∇×B = μ₀J + μ₀ε₀ ∂E/∂t
Currents and changing electric fields both create magnetic fields.
Try the simulationVisualize the Invisible
01 · 3 simulators
Coordinate systems
Vectors and differential length, area and volume elements in three dimensions.
Coordinates
Cartesian system
(x, y, z)Vectors and differential length, area and volume in rectangular coordinates.
Open simulator CoordinatesCylindrical system
(ρ, φ, z)Explore all 8 octants and the differential elements of cylindrical coordinates.
Open simulator CoordinatesSpherical system
(r, θ, φ)Explore all 8 octants and the differential elements of spherical coordinates.
Open simulator
02 · 2 projects
Electrostatics
Forces, fields and flux due to static charges.
03 · 2 projects
Magnetostatics
Magnetic fields produced by steady currents.
04 · 1 project
Time-varying fields
Induction from changing magnetic flux.
05 · 1 simulation
Wave propagation
Electromagnetic waves travelling through material media.
06 · 4 simulations
Waveguides
Guided wave propagation and modes in rectangular waveguides.
Waveguides
WaveLab introduction
fc = c/2 · √((m/a)² + (n/b)²)An overview of electromagnetic waveguides, cutoff and propagating modes.
Open intro WaveguidesRectangular waveguide
a × bWave propagation inside a rectangular waveguide.
Open simulation WaveguidesTE mode
TEmnTransverse Electric modes in a rectangular waveguide.
Open simulation WaveguidesTM mode
TMmnTransverse Magnetic modes in a rectangular waveguide.
Open simulation